Key among this year’s most exciting discoveries is Isa Mazzei and Danny Goldhaber’s CAM (World Premiere), a surrealistic thriller set in the world of webcam erotica in which an ambitious young camgirl (“The Handmaid Tale”’s Madeline Brewer) discovers that she’s inexplicably been replaced on her site with an exact replica of herself – a replica that knows personal things only she could know, and is considerably less guarded about privacy. The control that she has over her life, and the people in it, begins to break away. CAM is both an extraordinary genre vision and a milestone – the rare film about sex work written by a former sex worker. CAM brilliantly captures the anxieties and identity struggles of this unfairly judged field of work, with an approach that borders on the Lynchian. Produced by Blumhouse Pictures, Gunpowder & Sky, and Divide/Conquer, CAM also stars Patch Darragh, Melora Walters, Devin Druid, and Samantha Robinson.